The day has finally come—Justin Bieber's fourth studio album, Purpose, is here. A lot has changed since his last studio album, Believe, came out in 2012—his tattoo collection has grown, he's become a bonafide underwear model, and of course, his hair is totally different. In fact, it's been all types of different since 2012—like, more than you realize, probably.

To celebrate Purpose and its arrival in our lives, we rounded up 17 of the hairstyles Justin has had since 2012—enjoy!

(P.S. This list is best enjoyed with Purpose playing in the background.)

Front flip

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This is what Justin's hair looked like the day Believe came out. It's flippy, shiny, and brown.

Side swoop

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In 2013 Justin brought back his trademark swoop, though it was sleeker and shorter than in his "Baby" days.

Slicked back

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In 2014, JB dabbled in a less flippy version of his 2012-favored style.

Mussed

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In the summer of 2014, Justin let things get ~messy~ up on his head. While his hair looks lighter, it's just the sun. The new colors are to come, don't fret.

Front/side swoop

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Like his #iconic front flip style, this look is longer on top, but it's styled to the side rather than straight up.

Blond

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In December 2014, Justin surprised everyone by revealing a platinum 'do. It was the first of many hair changes to follow. Buckle up.

Hat-free blond

HERO Magazine

The blond hair is forever immortalized in Hero Magazine. While Justin didn't show off his lighter hair much without a hat IRL, the magazine photos are hat-free, thankfully.

Longer

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By February, his hair wasn't quite as blond, but was definitely longer, so his front flip wasn't as, um, voluminous.

Slickkkk

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Eventually, Justin started slicking his hair back instead of trying to get the front to stay up.

So, so long

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At his Comedy Central roast, his hair reached its peak length. Justin recently called this style a "funny hair phase," so, yeah, he's not really feeling it either. Phew.

Ponytail

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At Coachella he threw those luscious locks into a baby ponytail—we've thought about it every day since then, basically.

Return to short hair

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Then, at the Met Gala, he debuted his new short 'do—while still long on top, the sides were closely buzzed.